package thread;

/**
 * 静态方法锁
 */
public class SyncDemo3 {
    public static void main(String[] args) {
        Boo b1 = new Boo();
        Boo b2 = new Boo();
        Thread t1 = new Thread(){
            public void run(){
                b1.dosome();
                //Boo.dosome();//常用类名点来访问静态方法
            }
        };
        Thread t2 = new Thread(){
            public void run(){
                b2.dosome();
            }
        };
        t1.start();
        t2.start();;

    }
}
class Boo{
   // public synchronized static void dosome(){
    public static void dosome(){
        /*
        静态方法中如果使用同步块时，指定的同步监视器对象应当也是类对象
        指定时的语法：类名.class
         */
        synchronized (Boo.class) {
            try {
                Thread t = Thread.currentThread();
                System.out.println(t.getName() + "：正在执行dosome方法...");
                Thread.sleep(3000);
                System.out.println(t.getName() + "：执行dosome方法完毕");
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}